21195638464721200

Names of 21195638464721200

• Cardinal: 21195638464721200 can be written as Twenty-one quadrillion, one hundred ninety-five trillion, six hundred thirty-eight billion, four hundred sixty-four million, seven hundred twenty-one thousand, two hundred.

Scientific notation

• Scientific notation: 2.11956384647212 × 10¹⁶

Factors of 21195638464721200

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1123

Divisors of 21195638464721200

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 547 569 1094 1138 2188 2276 2735 2845 4376 4552 5470 5690 8752 9104 10940 11380 13675 14225 21880 22760 27350 28450 43760 45520 54700 56900 109400 113800 218800 227600 299209 311243 323761 598418 622486 647522 1196836 1244972 1295044 1496045 1556215 1618805 2393672 2489944 2590088 2992090 3112430 3237610 4787344 4979888 5180176 5984180 6224860 6475220 7480225 7781075 8094025 11968360 12449720 12950440 14960450 15562150 16188050 23936720 24899440 25900880 29920900 31124300 32376100 59841800 62248600 64752200 119683600 124497200 129504400 163667323 170249921 177097267 327334646 340499842 354194534 654669292 680999684 708389068 818336615 851249605 885486335 1309338584 1361999368 1416778136 1636673230 1702499210 1770972670 2618677168 2723998736 2833556272 3273346460 3404998420 3541945340 4091683075 4256248025 4427431675 6546692920 6809996840 7083890680 8183366150 8512496050 8854863350 13093385840 13619993680 14167781360 16366732300 17024992100 17709726700 32733464600 34049984200 35419453400 65466929200 68099968400 70838906800 93126706787 96872205049 186253413574 193744410098 372506827148 387488820196 465633533935 484361025245 745013654296 774977640392 931267067870 968722050490 1490027308592 1549955280784 1862534135740 1937444100980 2328167669675 2421805126225 3725068271480 3874888201960 4656335339350 4843610252450 7450136542960 7749776403920 9312670678700 9687220504900 18625341357400 19374441009800 37250682714800 38748882019600 52989096161803 105978192323606 211956384647212 264945480809015 423912769294424 529890961618030 847825538588848 1059781923236060 1324727404045075 2119563846472120 2649454808090150 4239127692944240 5298909616180300 10597819232360600 21195638464721200
• Sum of all divisors σ(n): 51105602349564280
• Sum of proper divisors (its aliquot sum) s(n): 29909963884843080
• 21195638464721200 is an abundant number, because the sum of its proper divisors (29909963884843080) is greater than itself. Its abundance is 8714325420121880

Bases of 21195638464721200

• Binary: 1001011010011010101001000100101011110100011000100110000₂
• Hexadecimal: 0x4B4D52257A3130
• Base-36: 5SP85VYQ6GG

Squares and roots of 21195638464721200

• 21195638464721200 squared (21195638464721200²) is 449255089927168868216993729440000
• 21195638464721200 cubed (21195638464721200³) is 9522248464532082192658933577923369057832128000000
• The square root of 21195638464721200 is 145587219.4415471347
• The cube root of 21195638464721200 is 276746.5195136967

Scales and comparisons

• 21,195,638,464,721,200 seconds is equal to 673,955,740 years, 39 weeks, 4 days, 23 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,195,638,464,721,200 would take you about two billion, twenty-one million, eight hundred sixty-seven thousand, two hundred twenty-two years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21195638464721200 cubic inches would be around 23062.2 feet tall.

Recreational maths with 21195638464721200

• 21195638464721200 backwards is 00212746483659112
• The number of decimal digits it has is: 17
• The sum of 21195638464721200's digits is 61
• More coming soon!